A much calmer Clayton Osbon appeared before a judge in Amarillo, Texas, yesterday, days after the pilot freaked out on a JetBlue flight from New York and scared the bejesus out of the plane’s passengers and crew.

The grim-faced Osbon, dressed in a light-green shirt and gray pleated pants, was a far cry from the raving lunatic who ranted about religion, death and terrorists last week.

Osbon, 49, was at the helm of a New York-to-Las Vegas flight March 27 when he began spouting a religious sermon in the cockpit, saying that “things just don’t matter” and that “we need to take a leap of faith.”

The aircraft’s first officer locked the wild-eyed Osbon out of the cockpit after he said, “We’re not going to Vegas.”

Passengers restrained him in the forward galley, tying him up with seat-belt extenders, according to court papers.

The replacement pilot landed the aircraft in Amarillo.

In court, Osbon was still restrained, this time in handcuffs and leg irons, as a federal judge advised him of the interfering- with-the-flight-crew charges that could land him in prison for 20 years.

in NY